Speed-reducer.



D. H. HATLEE.v SPEED REDUCER. APPLICATWN FILED DEC. 9 I9l5.)

l 9E. 92,627 Patented July 25, 1916.

2 SHEETS-SHEET l.

@59H11 zoom D. H. HATLEE.

SPEED REDUCER.

APPLICATION FILED DEC.9| 1915.

l JI 92,62?, Patented July 25, 1916.

2 SHEETS-SHEET 2.*

9,1% wwf navm n. nanna, or imciiamcsvima, New Yoan ,eraan-Aannemer..

lSpeeiilcation of Letters Patent.

Patented .my 25, icio.

Application led December 9, 1915. Serial No. 65,966.

To all whom it may concern.'

Be it known that I DAvm H. a citizen of the United States, residing at echanicsville, in the county of Saratoga and State of New York, have invented certain new and useful Improvements. in Speed-Reducers and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same reference being had to the accompanying drawings, and to letters and ii es of reference marked thereon, which orm a part of this specification.

This invention relates to n ew and useful improvements in eed reducing gear 'apparatus and especia y in the provision o a planetary gear adapted to impart a reduced motion from a driving shaft to a gear upon a driven shaft.

The invention consists of a simple and efficient apparatus of this nature havin various details of construction and com mations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined iii the appended claim.

My invention is illustrated in the accompanying drawings, in which Figure 1 is 'a side elevation of a device,

partly in section. Fig. 2 is a sectional view, v

the parts being disassembled. .Fig 3 is a face view of tle internal gearing, the left hand gear being removed. Fig. 4 is a side elevation of the stationary gear. Fig. 5 is a detail view of the planetary driving gear.'

Fig. 6 is a view sho the device arranged for different speeds than that shown in Fi 3.

Reference now being had to the details of the drawings by letter, A designates a driving shaft and B is a stationary geardisk having a circumferential flange C, the inner surface of which has teeth D, the shaft be? ing journaled in the laterally projecting hollow hub portion E. .The shaft is provided with a crank F which is fastenedeccentrically to the shaft A and terminating at its upper end in a shaft H. 'A double planetary gear wheel, designated by letter.` ispi'ovided with a hub portion J which is )ournaled upon the crank F and is provided with two `flanges, designated by letters K and L, the former of which is provided with circumferential teeth K and the latter with v teeth L', the teeth L being adapted to engage with the teeth formed on the inner surface 'of the flange C, while the teeth K l engage teeth upon the inner surface of the iiange N of the rotatable wheel M. The wheel M has a hub O which is keyed to the shaft R. 4

In operation, when the shaft A is rotated, the planetary gear member I is given a rotary movement incident to the crank F turn-v greatly reduced movement to be impartedto the gear wheel I and in turn to the shaft R which is keyed to said wheel M.

In Fig. 6 of the drawings, I have shown a slight modification of my invention,iii which means is illustrated for differentiating the speed from that obtained in the construction before described and as illustrated in Fi s. 1 and 2 of the drawings, and in which mo fication the crank carried a double gear wheel, designated by letter T, having two series of teeth thereon, one series intermeshin with the teeth upon the stationary wheel while the other series engages teeth upon the driven wheel, not shown. It will be evident that, if desired, friction gearing may be substituted for the positive gearing.

WhatI claim to be new is A speed reducing ear, consisting in coma hub projecting in opposite directions and keyed to said shaft and provided with an interiorly toothed flange, a second gear wheel with a hollow hub and a iiange with internal teeth, the said angcs being of different diameters, a driving shaft journaled in said hollow hub, a crank pin projecting eccentrically from the end of the driving shaft and extending beyond the marginal edge of the flange of the wheel on-which it is mounted, a planetary gear having a hub journaled upon said crank pin, the end of the pin being Hush with one end of the hub of the planehub ofthe adjacentfgear, said `planetary tary gear, and bearing against the adjacent engageerespectivelythe teethupontheanges end of the shaft to which said gear Wheel of sald Wheels. 10 is keyed, the hub portion of the planetary In testimony .whereof I hereunto aix my gearbearingagainst theend of the projecting signature'in presence 4of two Witnesses.

, DAVID H. I-IATLEE. gear being provided with two series of stag- Witnesses: f gered teeth, each seriesy being ,of different FRANKLIN H..HOUGH, f diameters and designed to" conform to and *n E. F GIBBS. 

